Underframe for railway-cars



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UNDERFRAME FOR RAILWAY GARS.

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H. R. KEITHLEY. UNDERFRAME FOR RAILWAY CARS.

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UNITED STATES;

Patented February 16, 1904.

HERBERT R. KEITHLEY, OF CHICAGO, ILLINOIS.

UNDERFRANIE FOR RAILWAY-CARS.

SPECIFICATION forming part of Letters Patent No. 752,231, dated February 16, 1904,

Application filed October 12, 1903. Serial No. 176,654. (No model.)

To a/Z whom, it may concern:

Be it known that I, HERBERT R. KEITHLEY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Und'erfrarnes for Railway-Cars, of which the following is a specification.

This invention relates to steel railway-car underfrarnes which are built up of structural shapes and plates, and more particularly to underfrarnes similar to that disclosed in my application for United States Letters Patent filed June 6, 1903, Serial No. 160,385.

The object of the present invention is to provide an underfrarne of a construction possessing' the advantages of the underfrarne of said application and in which the relative arrangement of the parts is such that the underframe is better adapted for use with Woodenbottom cars, whether of the fiat, gondola, or box type. a

In the accompanying drawings, consisting of two sheets, Figure l is a plan view, partly broken away, of one-half of an underfrarne embodying the invention. Fig. 2 is a transverse vertical section thereof, on an enlarged scale, in line 2 2, Fig. 1, showing a portion of a wooden Hoor-frame supported by the underfrarne. Fig. 3 is a side elevation of one-half of the underframe. Fig. 4: is longitudinal vertical section in line 4 et, Fig. l. Fig. 5 is a transverse vertical section, on an enlarged scale, in line 5 5, Fig. l1.

` Like letters of reference refer to like parts in the several figures.

The underframe is composed of parallel longitudinal side and center sills, each in the form of a built-up plate-girder, end sills, transverse bolsters, which extend from one side sill to the other, and transverse floor-beams, which connect the center and side sills between the bolsters.

Each side sill consists of a vertical webplate A and upper and lower flanges or chords B and C. The girder side sill is preferably constructed similar to that disclosed in my application for United States Letters Patent filed January 2, 1908, Serial No. 140,003, except that the Z-bar forming the upper chord is arranged, as shown, with its outer flange projecting downwardly and riveted to the upper portion of the side-sill web-plate, its web extending inwardly from the side-sill web-plate and its inner flange projecting upwardly from the inner edge of its web. The Z-bar is preferably riveted to the inner side of the side web-plate, and its web is reinforced by a hori- Zontal plate arranged beneath and riveted to the web of the Z-bar. This plate b preferably terminates at the holsters. The Z-bar upper chord or flange of the side-sill girder, arranged as above described, gives great lateral stiffness to resist horizontal stresses tending to cause an outward deflection or bulging of the upper portion of the side sill and also lends great vertical stiifness to the side sill. The inwardly-projecting web of the Z-bar aifords ample riveting area for connecting the upper portions of the holsters and floor-beams to the side sill, and at the same time, as will be observed from Fig. 2 of the drawings, the longitudinal wooden side sill of the floor-frame can be supported-directly on the web of the Z -bar outside of its upwardly -projecting iiange, to which it can be bolted, being thus in an advantageous position for the attachment of the wooden car-floor and siding of the car when the underfrarne is vemployed for gondola and box cars. The wooden floor-sill does not extend outwardly beyond the web of the girder side sill, so that vertical stiifeners for the gondola and box car side can be arranged outside of the wooden floor-sill and rieted directly to the web of the girder side si The center sills are arranged in their usual relation, and each sill preferably consists of a vertical web-plate D and upper and lower chords. The lower c'hord is formed by an angle-bar d, riveted to the lower edge of the web-plate. The upper portions of the webs of the two center sills are connected together, and their upper iianges or chords are formed by a channelbeain E, arranged between the web-plates, with l its web horizontal and its iianges depending inside of and riveted to the web-plates of the two center sills. The center sills and side sills are preferably deeper betweenr the bolsters than at their ends. The center sills preferably do not extend to the ends of the underframe, but terminate a short distance beyond the bolster, as shown in Figs. l and 4, and separate draft-sills F are employed which extend from the bolsters to the end of the underframe. These draft-sills are preferably formed by channel-beams arranged vertically with their flanges projecting outwardly, their inner ends being located outside of and riveted to the projecting end portions of the center sills. The rivets connecting the channel draft-beams to the center sills pass through the depending flanges of the channel-beam E, connecting the center sills and the vertical flanges of the angles forming the lower chords of the center sills. The attachmentis therefore very strong and rigid, while at the same time permitting the removal and replacement of the draftbeams in case of damage to them.

G represents one of the bolsters, which are arranged in their usual relation and may be ofl any suitable construction, but are preferably constructed similar to the bolster described in United States Patent No. 725,849, granted to me April 21, 1903. The ends of the bolster extend beneath the inwardly-projecting webs of' the Z-bars forming the upper chords of' the side sills and are securely attached thereto by rivets or the like.

H represents transverse Hoor-beams, which are arranged intermediate of the bolsters and extend from the center sills to the side sills, beingV securely attached to both the center and side sills in any approved manner. In thc construction shown two of the Hoor-beams H, which are arranged in line on opposite sides of the center-sill structure, are connected by a horizontal plate, which extends transversely over the center-sill structure and is riveted to the upper flanges of the floor-beams and web of the channel-beam E connecting the center sills. rIhese same floor-beams are shown as connected to the side sills by gusset-plates J, arranged between and riveted to the upper flanges of' the Hoor-beams and the webs of the Z-bars and horizontal plates forming the upper chords of the sills.

I claim as my inventioni l. In an underf'rame, a plate-girder side sill, comprising a web-plate, and a Z-bar arranged with its web horizontal and projecting laterally inward from the web-plate of' said side sill, one flange depending and riveted to said web-plate of the side sill, and the other iiange projecting upwardly, substantially as set forth.

2. In an underframe, a plate-girder side sill comprising a vertical web-plate, a Z-bar arranged with its web horizontal and projecting laterally inward from the web-plate ofl said side sill, one iange depending and riveted to the inner side of said vertical web-plate, and

the other flange projecting upwardly, and a horizontal plate arranged beneath and riveted to the web of said Z-bar, substantially as set forth. u

3. In an underframe, the combination of side sills,each comprising a vertical web-plate, and a Z-bar arranged with its web horizontal and projecting laterally inward from said vertical web-plate, one flange depending and riveted to said vertical web-plate, and the other flange projecting' upwardly, and bolsters connecting said side sills, the ends ofl said bolsters extending beneath and `being secured to the webs of said Z-bars of the side sills, substantially as set forth.

4. The combination of center sills having vertical web-plates, a channel-beam arranged between said center sills with its web horizontal and its flanges depending and riveted to said center-sill web-plates, draft-beams arranged beside the ends of said center sills, and rivets or the like connecting said draft-sills to said center-sill web-plates and said channelbeam flanges, substantially as set forth.

Witness my hand this 9th day of October, 1903.

HERBERT R. KEITHLEY.

Witnesses:

JNO. J BONNER, CHAs. W. PARKER 

